1 power range: up to 95w height: 11.4mm max footprint: 29.2mm x 21.8mm max toplogy: forward and flyback usa 858 674 8100 germany 49 7032 7806 0 singapore 65 6287 8998 shanghai 86 21 62787060 china 86 755 33966678 taiwan 886 3 4356768 electrical specifcations @ 25c - operating temperature -40c to +125c pri. inductance (1, 2-3, 4) 307 h 25% lk. inductance (1, 2-3, 4) with (5, 6, 9, 10) shorted 0.35 h max (1, 2-3, 4) 65 m max dcr (7, 8, 9-10, 11, 12) 27m max (5-6) 240 m max hi-pot pri-sec 1500 vrms k1 factor 20.2 pri. inductance (1, 2-3, 4) 110h 10% lk. inductance (1, 2-3, 4) with (12, 11, 10, 9, 8, 7) shorted 2 h max (4-5) 85m max dcr (12, 11, 10-9, 8, 7) 12m max (1-3) 300m max hi-pot pri-sec 1500 vrms k1 factor 1364.8 pri. inductance (1, 2-5, 4) 89.2 h 18% lk. inductance (1, 2-3, 4) with (12, 11, 10, 9, 8, 7) shorted 1.5 h max (1, 2-3,4) 50m max (12-11) 3.8m max (10-9)=(8-7) 35 m max (5-6) 110m max hi-pot pri-sec 1500vdc k1 factor 21.5 pa0273nl pa0751nl pa0769nl dcr forward transformer flyback transformer forward transformer p666.b (05/14) pulseelectronics.com high frequency wire wound transformers efd20 platforms - smt
2 electrical specifcations @ 25c - operating temperature -40c to +125c pri. inductance (3-4) 137 h 32% lk. inductance (3-4) with (11, 10, 9, 8) shorted 1.0 h max (3-4) 35 m max (1-2) 199m max (5-6) 100m max (11-10)=(9-8) 17m max hi-pot pri-sec 500 vrms k1 factor 29.3 pri. inductance (2, 3-4, 5) 10h 10% lk. inductance (2, 3-4, 5) with (11, 8) shorted 0.3 h max (2, 3-4, 5) 15.75 m max (11-8) 560m max hi-pot pri-sec 1500 vrms k1 factor 322.6 pri. inductance (1, 2-3, 4) 38.3 h 7% lk. inductance (1, 2-3, 4) with (12, 11, 10, 9, 8, 7) shorted 1.0 h max (1-3) 72 m max (2-4) 85m max (12, 11, 10-9, 8, 7) 2.5 m max (5-6) 230m max hi-pot pri-sec 1800 vrms k1 factor 772.2 pri. inductance (1, 2-3, 4) 11.5 h 10% lk. inductance (1, 2-3, 4) with (12, 11, 10, 9, 8, 7) shorted 0.5 h max (1, 2-3, 4) 28m max (8-7) 12m max pa1558nl dcr (12-11) 5m max (10-9) 62 m max (5-6) 190m max hi-pot pri-sec 1500 vrms 463.7 pa1066nl dcr pa1366nl pa1477nl dcr dcr forward transformer flyback transformer flyback transformer flyback transformer p666.b (05/14) pulseelectronics.com high frequency wire wound transformers efd20 platforms - smt
3 electrical specifcations @ 25c - operating temperature -40c to +125c pri. inductance (3, 4-5, 6) 73h 30% lk. inductance (3, 4-5, 6) with (12, 11, 10, 9, 8, 7) shorted 1.0 h max (3, 4-5, 6) 10.2 m max dcr (12, 11, 10-9, 8, 7) 5m max (1-2) 115m max hi-pot pri-sec 1500vdc k1 factor 40.3 pri. inductance (1, 2-3, 4) 28.5h 5% lk. inductance (1, 2-3, 4) with (12, 11, 10, 9, 8, 7) shorted 1 h max (1, 2-3, 4) 39.0 m max dcr (12, 11, 10-9, 8, 7) 3.5m max (5-6) 230m max hi-pot pri-sec 1800 vrms k1 factor 574.6 pa1692nl pa1735nl flyback transformer flyback transformer pri. inductance (1, 2-3, 4) 20.5h 5% lk. inductance (1, 2-3, 4) with (12, 11, 10, 9, 8, 7) shorted 1 h max (1, 2-3, 4) 39.0 m max dcr (12, 11, 10-9, 8, 7) 8.5m max (5-6) 230m max hi-pot pri-sec 1500 vrms k1 factor 413.3 pri. inductance (1, 2-3, 4) 4.5 h 5% lk. inductance (1, 2-3, 4) with (12, 11, 10, 9, 8, 7) shorted 0.25 h max (1, 2-3, 4) 9.5m max dcr (12, 11, 10-9, 8, 7) 3m max (5-6) 130m max hi-pot pri-sec 1800 vrms k1 factor 241.9 pri. inductance (1, 2-3, 4) 4.5 h 5% lk. inductance (1, 2-3, 4) with (12, 11, 10, 9, 8, 7) shorted 0.2 h max (1, 2, 3, 4) 9.5m max dcr (12, 11, 10-9, 8, 7) 5m max (5-6) 130m max hi-pot pri-sec 1800 vrms k1 factor 241.9 pa1736nl pa1835nl pa1836nl flyback transformer flyback transformer flyback transformer p666.b (05/14) pulseelectronics.com high frequency wire wound transformers efd20 platforms - smt
4 electrical specifcations @ 25c - operating temperature -40c to +125c pri. inductance (1, 2-3, 4) 4.5 h 5% lk. inductance (1, 2-3, 4) with (12, 11, 10, 9, 8, 7) shorted 0.2 h max (1, 2, 3, 4) 9.5m max dcr (12, 11, 10-9, 8, 7) 23m max (5-6) 130m max hi-pot pri-sec 1800vdc k1 factor 241.9 pa1837nl flyback transformer pri. inductance (1-3) 7.2 h 5% lk. inductance (1-3) with (11, 10-9, 7) shorted 0.3 h max (1-3) 52 m max dcr (11, 10-9, 7) 12m max (5-6) 240 m max hi-pot pri-sec 1500 vrms k1 factor 290.3 pri. inductance (1, 2-5, 6) 292.0 h 32% lk. inductance (1, 2-5, 6) with (12, 11, 10, 9, 8, 7) shorted 1.3 h max (1, 2-5, 6) 78.0 m max dcr (7, 8-9, 10) 12m max (11-12) 43 m max hi-pot pri-sec 1500 vrms k1 factor 20.2 pri. inductance (1-4) 57.6 h 12% lk. inductance (1-4) with (all windings) shorted 0.5 h max (1-4) 65 m max (3-2) 155 m max (6-5) 145 m max (7, 8-9, 10) 4m max (11-12) 55 m max hi-pot pri-sec 1500vdc k1 factor 26.9 pri. inductance (1,2-3.4) 100h 12% lk. inductance (1, 2-3, 4) with (5, 6, 9,1 0) shorted 0.45 h max (1, 2-3, 4) 72 h max pa2398nl dcr (7, 8, 9-10, 11, 12) 15 h max (5-6) 680 h max hi-pot pri-sec 1500 vrms 16.1 pa2047nl pa2053nl pa2291nl dcr flyback transformer flyback transformer flyback transformer flyback transformer p666.b (05/14) pulseelectronics.com high frequency wire wound transformers efd20 platforms - smt
5 electrical specifcations @ 25c - operating temperature -40c to +125c pri. inductance (1-6) with (3-4) shorted 491 h 35% lk. inductance (1-6) with (all windings) shorted 1 h max (1-3) 36.1 m max (4-6) 45.6 m max dcr (8-7) 86.4 m max (11-9) 86.4 m max (12-10) 47.8 m max hi-pot pri-sec 1500 vrms k1 factor 16.1 pri. inductance (5, 4-3, 2) 112.0 h max lk. inductance (5, 4-3, 2) with (all windings) shorted 1 h max (5-3) 55 m max (4-2) 67.7 m max dcr (10, 11-8, 9) 5.5m max (12-7) 123m max (6-1) 923 m max hi-pot pri-sec 1500vdc k1 factor 24.8 pa2041nl pb2089nl forward transformer forward transformer p666.b (05/14) pulseelectronics.com high frequency wire wound transformers efd20 platforms - smt
6 for more information pulse worldwide headquarters 12220 world trade drive san diego, ca 92128 u.s.a. tel: 858 674 8100 fax: 858 674 8262 pulse europe einsteinstrasse 1 d-71083 herren - berg germany tel: 49 7032 78060 fax: 49 7032 7806 135 pulse china headquarters b402, shenzhen academy of aerospace technol - ogy bldg. 10th kejinan road high-tech zone nanshan district shenzen, pr china 518057 tel: 86 755 33966678 fax: 86 755 33966700 pulse north china room 2704/2705 super ocean finance ctr. 2067 yan an road west shanghai 200336 china tel: 86 21 62787060 fax: 86 2162786973 pulse south asia 135 joo seng road #03-02 pm industrial bldg. singapore 368363 tel: 65 6287 8998 fax: 65 6287 8998 pulse north asia 3f, no. 198 zhongyuan road zhongli city taoyuan county 320 taiwan r. o. c. tel: 886 3 4356768 fax: 886 3 4356823 (pulse) fax: 886 3 4356820 (fre) performance warranty of products ofered on this data sheet is limited to the parameters specifed. data is subject to change without notice. other brand and product names mentioned herein may be trademarks or registered trademarks of their respective owners. ? copyright, 2014. pulse electronics, inc. all rights reserved. paxxxxnl / pbxxxxnl mechanical notes: 1. the temperature of the component (ambient plus temperature rise) must be within the stated operating temperature range. 2. the above transformers and inductors have been tested and approved by pulses power ic partners and are sited in the appropriate datasheet or evaluation board documentation at these companies. to determine which ic and ic partners are matched with the above pulse part numbers please consult the ic cross reference on the pulse website. 3. for fyback topology applications, it is necessary to ensure that the transformer will not saturate in the application. the peak fux density (bpk) should remain below 2700gauss. to calculate the peak density, use the following formula: bpk (gauss) = k1_factor * ipk (a) 4. in high volt-sec applications, it is important to calculate the core loss of the transformer. approximate transformer core loss can be calculated as: coreloss (w) = 1.32e-13 * (freq_khz) * ( b_gauss) where b can be calculated as: for flyback topology: b = k1_factor * (a) for forward topology: b = k1_factor * volt-sec 5. optional tape & reel packaging can be ordered by adding a t sufx to the part number (i.e. pa0273nl becomes pa0273nl t ). pulse complies with industry standard tape and reel specifcation eia481. the tape and reel for this product has a width (w=44mm), pitch (po=32mm) an depth (ko=11.78mm). 6. the nl sufx indicates an rohs-compliant part number. non-nl sufxed parts are not necessarily rohs compliant, but are electrically and mechanically equivalent to nl versions. if a part number does not have the nl sufx, but an rohs compliant version is required, please contact pulse for availability. 1.63 2.63 pulseelectronics.com high frequency wire wound transformers efd20 platforms - smt p666.b (05/14)
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